Fixing frame, backlight module and display device

Abstract

The utility model provides a fixing frame, a backlight module and a display device.The fixing frame is applied to the backlight module, the backlight module is provided with a display area and a non-display area surrounding the display area, the fixing frame comprises a frame, the inner side of the frame is defined by the frame, the frame comprises a first supporting part and a second supporting part, and the first supporting part and the second supporting part are oppositely arranged; the first supporting part is provided with a first bearing surface; the second supporting part is connected to the first bearing surface of the first supporting part; the first supporting part is further provided with a first inclined face, the first inclined face faces the inner side of the frame, the first inclined face is connected with the first bearing face, the first inclined face inclines towards the direction close to the inner side of the frame from the first bearing face, and at least part of the first inclined face is correspondingly arranged on the non-display area and the junction of the non-display area. The fixing frame can improve the display quality of the display device.

Description

TECHNICAL FIELD

[0001] The utility model relates to display technical field especially relates to a fixed frame, backlight unit and display device. BACKGROUND

[0002] In the display technology and its related field, the fixed frame as the cornerstone of installing the internal structure of the display device plays a vital role. However, in the process of installing the diaphragm to the frame, there is a significant problem: if the lap joint position of the diaphragm falls exactly at the junction of the display area and the non-display area, the junction area will often appear the phenomenon of visual brightness weakening, affecting the overall display effect.

[0003] In view of this situation, the current display technology field is facing a pressing core challenge: how to effectively avoid the light obstruction when the diaphragm is fixed on the fixed frame, so as to prevent the phenomenon of visual dimness in the junction area. UTILITY MODEL CONTENT

[0004] The application embodiment provides a fixed frame, backlight unit and display device, which can improve the display quality of the display device.

[0005] The application embodiment provides a fixed frame applied to a backlight unit, the backlight unit has a display area and a non-display area surrounding the display area, and the fixed frame comprises:

[0006] A frame surrounds the inner side of the frame, and the frame comprises a first support part and a second support part, the first support part has a first supporting surface; the second support part is connected to the first supporting surface of the first support part;

[0007] The first support part also has a first inclined surface, the first inclined surface faces the inner side of the frame, the first inclined surface is connected to the first supporting surface, the first inclined surface is inclined from the first supporting surface to the direction close to the inner side of the frame, and the first inclined surface is at least partially arranged at the non-display area and the junction of the non-display area.

[0008] In some embodiments, the first inclined surface is a curved surface or a folded surface.

[0009] In some embodiments, when the first inclined surface is a curved surface, the first inclined surface is a circular arc surface.

[0010] In some embodiments, the fixed frame further comprises a rib position, and the rib position is arranged on the first supporting surface and protrudes from the first supporting surface.

[0011] In some embodiments, the number of rib positions is at least two, and the rib positions are distributed at intervals.

[0012] In some embodiments, the cross-sectional area of the rib position gradually decreases in a direction in which the first support portion points to the second support portion.

[0013] In some embodiments, the rib position comprises a dot-shaped rib position or a long strip-shaped rib position.

[0014] In some embodiments, when the rib position is long strip-shaped, the extending direction of the rib position is perpendicular to the edge of the first bearing surface close to the inner side of the frame.

[0015] The embodiments of the present application also provide a backlight module, which has a display area and a non-display area surrounding the display area, and comprises:

[0016] The fixing frame is the fixing frame described above.

[0017] The diaphragm assembly is arranged in the inner side of the frame, overlaps the first bearing surface, and has a gap between the diaphragm assembly and the first inclined surface.

[0018] The embodiments of the present application also provide a display device, which comprises:

[0019] The backlight module is the backlight module described above.

[0020] The liquid crystal module is arranged opposite to the backlight module, and is connected with the frame.

[0021] In the fixing frame, the backlight module and the display device provided by the embodiments of the present application, the frame is composed of a first support portion and a second support portion, the first bearing surface of the first support portion is used for bearing the diaphragm assembly, and the second support portion is used for bearing the liquid crystal module. The liquid crystal module and the diaphragm assembly adopt a layered layout in the embodiments, which can provide sufficient fixing area for the liquid crystal module on the premise of ensuring that the expansion / contraction space of the diaphragm assembly is not affected. The diaphragm assembly has a gap between the diaphragm assembly and the first inclined surface, the gap allows light to penetrate between the diaphragm assembly and the first inclined surface, optimizes the light transmission path, effectively illuminates the non-display area part below the diaphragm assembly, significantly reduces the visual dim phenomenon caused by light obstruction, and greatly improves the overall brightness of the display device. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1This is a schematic diagram of the structure of a display device in the prior art.

[0024] Figure 2 This is a schematic diagram of the structure of the fixing frame provided in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the first structure of the framework provided in the embodiments of this application.

[0026] Figure 4 This is a schematic diagram of a second structure of the framework provided in an embodiment of this application.

[0027] Figure 5 This is a schematic diagram of a third structure of the framework provided in the embodiments of this application.

[0028] Figure 6 This is a schematic diagram of the fourth structure of the framework provided in the embodiments of this application.

[0029] Figure 7 This is a fifth structural diagram of the framework provided in the embodiments of this application.

[0030] Figure 8 This is a sixth structural diagram of the framework provided in the embodiments of this application.

[0031] Figure 9 This is a seventh structural diagram of the framework provided in the embodiments of this application.

[0032] Figure 10 This is an eighth structural diagram of the framework provided in the embodiments of this application.

[0033] Figure 11 This is a schematic diagram of the backlight module provided in an embodiment of this application.

[0034] Figure 12 This is a schematic diagram of the structure of the display device provided in the embodiments of this application. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0036] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a display device in the prior art.

[0037] In the field of display technology and related fields, the fixing of the liquid crystal assembly 17 and the stability of the film sheet 14 are key factors to ensure the display quality of the display device 400. Especially in the design trend of the display device 400 pursuing higher screen ratio and narrower frame, the fixing of the liquid crystal assembly 17 and the stability of the film sheet 14 are facing unprecedented challenges.

[0038] In order to ensure that the film sheet 14 will not produce visual defects such as water ripples due to stress concentration when the temperature changes, the glue frame 12 needs to reserve enough space for the expansion and contraction of the film sheet 14 when designed. This space requirement is usually met by adjusting the size of the BM (Black Matrix) area of the liquid crystal assembly 17.

[0039] The adhesive such as double-sided tape 19 is arranged between the liquid crystal assembly 17 and the glue frame 12 to prevent the liquid crystal assembly 17 from falling off during long-term use or under the action of external force.

[0040] With the increasingly narrow frame design of the display device 400, the size of the BM area which is also located in the non-display area is also correspondingly greatly reduced. The BM area can avoid light leakage at the edge of the screen, effectively prevent halo or glare at the edge of the screen, and ensure the purity and clarity of the display picture.

[0041] The embodiment of the present application provides a fixing frame, a backlight module and a display device, which can provide sufficient fixing area for the liquid crystal module without affecting the expansion / contraction space of the film sheet assembly 2. The specific description is made below in combination with the drawings.

[0042] Please refer to Figure 2 , Figure 2 The structural schematic diagram of the fixing frame provided by the embodiment of the present application is shown.

[0043] The embodiment of the present application provides a fixing frame 1, which comprises a frame 11. The material of the frame 11 can be plastic, silica gel and metal.

[0044] The frame 11 is surrounded to form an accommodation space 111 for mounting and fixing the internal components of the display device 100, such as the film sheet assembly 2.

[0045] The inner surface of the frame 11 is provided with a groove 113 which is in communication with the accommodation space 111. The film sheet assembly 2 can be arranged in the inner side of the accommodation space 111, i.e. the inner side of the frame 11, and lapped in the groove 113 which is used for fixing the film sheet assembly 2, i.e. the groove 113 provides additional space for the expansion or contraction of the film sheet assembly 2. The liquid crystal module 20 can be arranged in the inner side of the accommodation space 111, i.e. the inner side of the frame 11, and connected with the end surface of the frame 11.

[0046] In other words, the liquid crystal module 20 and the diaphragm assembly 2 are arranged in a layered manner in the embodiment, and are not fixed in the same plane. Through the ingenious use of the layered design, sufficient fixing area is provided for the liquid crystal module 20 while ensuring that the expansion / contraction space of the diaphragm assembly 2 is not affected, thereby significantly improving the display quality and stability of the overall display device 100.

[0047] Please refer to Figure 3 , Figure 3 The first structure schematic diagram of the frame provided in the embodiment of the application is shown in FIG. 1. The frame 11 includes a first support part 115 and a second support part 117. The first support part 115 has a first bearing surface 1151. On the frame 11, the first bearing surface 1151 refers to a plane or surface for supporting and fixing the diaphragm assembly 2. The first bearing surface 1151 has a specific shape and size to ensure that the diaphragm assembly 2 can be correctly installed and positioned, i.e., the first bearing surface 1151 can be used to bear the diaphragm assembly 2.

[0048] The second support part 117 is connected to the first bearing surface 1151 of the first support part 115. The first support part 115 and the second support part 117 form a groove 113. The second support part 117 forms a second bearing surface 1171 on the side away from the first support part 115. On the frame 11, the second bearing surface 1171 refers to a plane or surface for supporting and fixing the liquid crystal module 20. Similar to the first bearing surface 1151, the second bearing surface 1171 also has a specific shape and size to ensure that the liquid crystal module 20 can be correctly installed and positioned, i.e., the second bearing surface 1171 can be used to bear the liquid crystal module 20.

[0049] The frame 11 can effectively support and fix the diaphragm assembly 2 and the liquid crystal module 20, so that the diaphragm assembly 2 and the liquid crystal module 20 are arranged in layers. Without affecting the expansion / contraction space of the diaphragm assembly 2, sufficient adhesive area is provided for the liquid crystal module 20, thereby significantly improving the display quality and stability of the overall display device 100.

[0050] The area of the connection region of the second support part 117 and the first support part 115 is a first area, and the area of the second bearing surface 1171 is a second area. The first area is smaller than the second area.

[0051] Since the first support part 115 is mainly responsible for supporting the membrane assembly 2, the connection area between the first support part 115 and the second support part 117 does not need to be too large, as long as it can meet the needs of stable connection. Therefore, the first area is set to be relatively small, which not only saves material cost, but also avoids unnecessary space occupation, making the structure of the whole frame 11 more compact and efficient. The area of the second supporting surface 1171 is the second area, and the second area is larger than the first area. This is because the second supporting surface 1171 needs to stably support the liquid crystal module 20, a key component, to ensure that it will not be displaced due to vibration or external force. The stability and firmness of the liquid crystal module 20 are crucial to the overall performance of the display device 100, so the design of the second supporting surface 1171 needs to pay more attention to stability and bearing capacity. By increasing the second area, the contact area between the first adhesive and the liquid crystal module 20 can be increased, thereby improving the adhesion and stability of the fixation.

[0052] In the direction of the first support part 115 towards the second support part 117, the cross-sectional area of the second support part 117 gradually increases. As a key component for supporting the liquid crystal module 20, the second support part 117 needs to have good bearing capacity and stability. By gradually increasing the cross-sectional area, the strength and rigidity of the second support part 117 can be effectively increased, so that it can maintain a stable form when facing external forces or vibrations, thereby ensuring the stability of the liquid crystal module 20. At the same time, this design strategy also helps to optimize the internal space utilization of the display device 100. In the context of narrow BM area design, by gradually increasing the cross-sectional area of the second support part 117, a more stable support surface can be provided for the liquid crystal module 20 without sacrificing the space of other components. This not only improves the overall performance of the display device 100, but also brings users a clearer and more stable display effect. Furthermore, the gradual increase of the cross-sectional area not only improves the bearing capacity and stability of the second support part 117, but also makes the frame 11 easier to demold during the preparation process. This reduces production costs and improves production efficiency.

[0053] Further, the first support part 115 and the second support part 117 are integrally formed. Specifically, this design manufactures the first support part 115 and the second support part 117 as a whole through injection molding, extrusion or other appropriate molding processes. This integrated design not only simplifies the manufacturing and assembly process, reduces production cost, but also improves the structural stability and precision of the frame 11, thereby further improving the overall performance and stability of the display device 100.

[0054] The first support part 115 and the second support part 117 in the above embodiments not only bear the basic function of bearing and fixing, but also are optimized for the display effect of the display device 100. When the membrane assembly 2 is installed on the frame 11, if the lapping position of the membrane assembly 2 is just located at the junction area of the display area 200 and the non-display area 300 (i.e. the junction of the BM area and the non-BM area), the problem of dull visual effect at the junction may be caused.

[0055] Please continue to refer to Figure 3 , specifically, the first support part 115 also has a first inclined surface 1153, which is towards the inner side of the containing space 111, i.e. the frame 11, and is connected with the first bearing surface 1151. The first inclined surface 1153 gradually inclines from the first bearing surface 1151 to the direction of the inner side of the containing space 111, i.e. the frame 11, and is ingeniously designed to surround the four sides of the light-emitting unit and / or the light guide plate and extend outward. This design not only avoids the problem of light shielding, but also realizes the dual functions of light guiding and light leakage prevention through the inclined structure, significantly increases the effective area of light, thereby improving the utilization rate of light and making the brightness distribution of the display device 100 more uniform, and improving the user's visual experience.

[0056] Please refer to Figure 4 , Figure 4 The second structure diagram of the frame provided by the embodiment of the present application. The first inclined surface 1153 is at least partially arranged in the non-display area 300 to optimize the conduction path of light in the non-display area 300.

[0057] The membrane assembly 2 is located in the inner side of the containing space 111, i.e. the frame 11, and lapped above the first bearing surface 1151. This design ensures the stability and position accuracy of the membrane assembly 2, and provides reliable support for the display device 100. At the same time, the membrane assembly 2 and the first inclined surface 1153 are arranged with a gap therebetween, allowing light to penetrate between the membrane assembly 2 and the first inclined surface 1153, thereby optimizing the conduction path of light in the non-display area 300.

[0058] Further, the embodiment of the present application increases the light inlet space in the depth range of more than 0.5mm corresponding to the outer side of the display area 200 below the membrane assembly 2. This design allows light to penetrate more smoothly below the membrane assembly 2 and illuminate the membrane assembly 2, effectively reducing the loss of light in the transmission process, and thereby improving the overall brightness of the display device 100.

[0059] At the junction of the display area 200 and the non-display area 300, the gap between the first inclined surface 1153 and the membrane assembly 2 in the embodiment of the present application is set to be greater than 0.3mm. The setting of this gap also helps the light to penetrate more smoothly to the membrane assembly 2 below, further reduces light loss, and improves display brightness.

[0060] Please continue to refer to Figures 5 to 7 , Figure 5 The third structural schematic diagram of the frame provided by the embodiment of the present application, Figure 6 The fourth structural schematic diagram of the frame provided by the embodiment of the present application, Figure 7 The fifth structural schematic diagram of the frame provided by the embodiment of the present application. Regarding the specific shape of the first inclined surface 1153, the embodiment of the present application provides two optional schemes: curved surface (such as Figure 5 and Figure 6 ) or folded surface (such as Figure 7 ). When the first inclined surface 1153 is a curved surface, it is preferably a smooth circular arc surface, which helps to uniformly distribute the light and reduce glare and reflection, thereby further improving the display effect.

[0061] Please refer to Figure 8 and Figure 9 , Figure 8 The sixth structural schematic diagram of the frame provided by the embodiment of the present application, Figure 9 The seventh structural schematic diagram of the frame provided by the embodiment of the present application.

[0062] The fixed frame 1 in the embodiment of the present application also includes a rib position 119, which is arranged on and protrudes from the first supporting surface 1151. The main function of the rib position 119 is to moderately lift the membrane assembly 2, thereby forming a certain height gap between the membrane assembly 2 and the first supporting surface 1151. The introduction of this gap effectively promotes the penetration of light, significantly expands the area illuminated by light, especially increases the light entering space in the depth range of 0.5mm and above outside the display area 200, thereby significantly improving the brightness performance of the display area 200 adjacent to the non-display area 300, effectively alleviating the visual dullness phenomenon caused by blocked light transmission, and overall improving the display effect.

[0063] The number of rib positions 119 is at least two, and the rib positions 119 are distributed at intervals to ensure stable support for the membrane assembly 2.

[0064] In the direction in which the first support portion 115 points to the second support portion 117, the cross-sectional area of the rib position 119 gradually decreases, that is, the contact area of the rib position 119 with the first bearing surface 1151 is greater than the contact area of the rib position 119 with the liquid crystal module 20, which not only improves the reliability of the rib position 119 fixed on the frame 11, but also helps to reduce the obstruction of the rib position 119 to the transmission of light.

[0065] The rib position 119 includes a point-like rib position 119 or a long strip-like rib position 119. The point-like rib position 119 has a small volume and a flexible layout, which minimizes the interference with the transmission of light; while the long strip-like rib position 119 provides more stable support for the membrane assembly 2 with its continuous form and larger contact area.

[0066] When the rib position 119 is a long strip-like rib position 119, the extension direction of the rib position 119 is perpendicular to the edge of the first bearing surface 1151 close to the inner side of the frame 11, that is, the accommodation space 111. This not only enables the rib position 119 to better resist the lateral pressure from the membrane assembly 2, but also ensures that the propagation direction of the light is not hindered, thereby further improving the display effect.

[0067] The extension length of the rib position 119 is equal to the width of the first bearing surface 1151 along the direction perpendicular to the thickness of the frame 11, which not only significantly enhances the overall structural strength of the frame 11, providing more stable support for the membrane assembly 2, but also effectively avoids the risk of the membrane assembly 2 falling off the rib position 119 during thermal expansion and contraction. Specifically, whether the membrane assembly 2 is in a contracted or expanded state, it can be tightly and uniformly supported by the rib position 119, thereby ensuring the high stability of the membrane assembly 2 during installation and use. This design not only improves the visual quality of the display device 100, but also prolongs its service life, providing users with a more premium display experience.

[0068] When the rib position 119 is a point-like rib position 119, the projection of the rib position 119 on the first bearing surface 1151 is circular, and / or elliptical, and / or polygonal. This not only enriches the form selection of the rib position 119, but also allows for flexible adjustment according to the needs of actual application scenarios, thereby meeting different display effects and performance requirements.

[0069] The height of the rib position 119 in this application is greater than or equal to 0.3 mm. The rib position 119 within this height range can provide sufficient penetration space for light, facilitating the increase of light-in space within a depth range of 0.5 mm or more outside the display area 200 starting from the junction of the display area 200 and the non-display area 300. This enables the light to penetrate more smoothly to the lower side of the membrane assembly 2, reducing the loss of light during transmission, thereby improving the overall brightness of the display device 100.

[0070] Further, the rib 119 is transparent, which not only retains the original supporting function of the rib 119, but also, by using a transparent material, further reduces the obstruction of light by the rib 119 when the light penetrates the gap between the membrane assembly 2 and the first supporting surface 1151, thereby improving the overall brightness and clarity of the display area 200. The application of the transparent rib 119 provides a more transparent visual effect for the display device 100, enhancing the user's visual experience.

[0071] The material of the rib 119 is an elastic material. The elastic material has excellent flexibility and recovery, which can well adapt to the deformation of the membrane assembly 2 during thermal expansion and contraction, thereby further reducing the friction and wear between the membrane assembly 2 and the rib 119. In addition, the rib 119 with elasticity can also provide cushioning for the membrane assembly 2, prolonging the service life of the display device 100.

[0072] Specifically, the rib 119 can be manufactured by plastic processing techniques such as injection molding and extrusion molding. When selecting specific materials, materials with excellent transparency and elasticity such as transparent thermoplastic polyurethane (TPU), transparent silicone, and transparent elastic polyolefin can be considered. These materials not only meet the functional requirements of the rib 119, but also have good processing performance and cost-effectiveness, suitable for large-scale production applications.

[0073] Further, please refer to Figure 10 , Figure 10 The eighth structural schematic diagram of the framework provided by the embodiments of the present application. The second supporting part 117 includes a sub-connection part 1173 and a sub-supporting part 1174. The sub-connection part 1173 is connected with the first supporting part 115 and extends along the thickness direction of the framework 11. The sub-supporting part 1174 is connected with the side of the sub-connection part 1173 away from the first supporting part 115. The side of the sub-supporting part 1174 away from the sub-connection part 1173 is the second supporting surface 1171, and the side of the sub-supporting part 1174 close to the accommodating space 111, i.e., the inner side of the framework 11, is the second inclined surface 1172.

[0074] The sub-connection part 1173 is closely connected with the first supporting surface 1151 of the first supporting part 115. This connection mode ensures the stability between the two, thereby ensuring the stability of the framework 11 under various conditions. The area of the connection region of the sub-connection part 1173 with the first supporting part 115 is a first area, which is relatively small to save materials and avoid unnecessary space occupation. At the same time, the sub-connection part 1173 extends along the thickness direction of the framework 11. This design not only enhances the structural strength of the framework 11, but also effectively transmits and disperses forces from different directions, further improving the tolerance of the framework 11, thereby prolonging the service life.

[0075] The sub-supporting part 1174 is connected to the side of the sub-connecting part 1173 away from the first supporting part 115, forming the main part of the second supporting part 117. The second supporting surface 1171, which is flat and stable, is provided on the side of the sub-supporting part 1174 away from the sub-connecting part 1173, and can be used to support the liquid crystal module 20 and other structures. The design of the supporting surface not only meets the high requirements of the liquid crystal module 20 on flatness and stability, but also ensures the stability and reliability of the liquid crystal module 20 during long-term use.

[0076] The connection area of the sub-connecting part 1173 with the first supporting part 115 (i.e. the first area) and the connection area of the sub-connecting part 1173 with the sub-supporting part 1174 (the third area) are both designed to be much smaller than the second supporting area (the second area). This design not only saves material costs, but also avoids unnecessary space occupation, making the structure of the entire frame 11 more compact and efficient.

[0077] In addition, the thickness of the sub-connecting part 1173 in the thickness direction of the frame 11 is designed to correspond to the thickness of the diaphragm assembly 2, and is equal to or slightly greater than the thickness of the diaphragm assembly 2. This design provides sufficient space for the shrinkage or expansion of the diaphragm assembly 2 in the thickness direction, and also avoids assembly problems caused by changes in the size of the diaphragm assembly 2, thereby ensuring the stability and reliability of the diaphragm assembly 2 during long-term use.

[0078] Please refer to Figure 11 , Figure 11 The structure of the backlight module provided in the embodiments of the present application is shown in the accompanying drawings. The embodiments of the present application also provide a backlight module 10 for providing a light source with sufficient brightness and uniform distribution, so that the liquid crystal display screen can normally display images. The backlight module 10 has a display area 200 and a non-display area 300 surrounding the display area 200, which is also called a BM (Black Matrix) area. The BM area is mainly formed in the edge area of the liquid crystal panel through specific processes and technologies. In the LCD liquid crystal panel screen, the BM area is located at the outermost periphery of the VA (Visual Area) and its main function is to prevent light from leaking out of the LCD edge. Since the backlight panel inside the LCD emits light, the user can see a clear picture. If the BM area is not designed properly or is too narrow, light leakage may occur at the edge of the screen, and even a noticeable halo may be formed in a pure black picture, affecting the display effect.

[0079] The backlight module 10 can include a direct backlight module 10 and a side backlight module 10. The direct backlight mode generally refers to using a plurality of LED lamp beads as light sources, which are arranged directly on the back of the liquid crystal panel. The direct backlight can provide uniform and high-brightness backlight effect, which is suitable for large-size display device 100. The side backlight module 10 generally refers to placing the LED light bar on the side of the liquid crystal panel, and uniformly distributing the light on the entire screen through the light guide plate. The side backlight structure is relatively simple, low in cost, and suitable for small and medium-sized display devices 100.

[0080] The backlight module 10 includes the fixing frame 1 and the film assembly 2 in the above embodiments. The film assembly 2 is arranged in the containing space 111 of the fixing frame 1, i.e., the inside of the frame 11. The film assembly 2 is lapped in the groove 113, which provides additional space for the expansion or contraction of the film assembly 2.

[0081] The film assembly 2 generally includes one or more layers of thin films, which can have different functions such as polarization, filtering, protection, etc. The film assembly 2 includes a lower diffusion sheet, a prism sheet, and an upper diffusion sheet arranged in sequence, which are tightly attached to each other to ensure effective transmission and regulation of light. Specifically, the lower diffusion sheet is precisely arranged on the first frame part (i.e., a specific part of the frame 11), which is mainly used to collect and uniformize the light emitted from the light guide plate, ensuring that the light can be smoothly projected onto the subsequent prism sheet. The prism sheet, also known as brightness enhancement film (BEF), is placed on the lower diffusion sheet. When the light of the backlight source passes through the prism sheet, its unique prism structure can guide the light so that only when the light is incident at a specific angle can it be effectively emitted by refraction. The rest of the light that does not meet the refraction condition will be reflected back to the light source by the edge of the prism and will be used again through the reflection sheet at the bottom of the light source. This process ensures efficient recycling of light in the backlight source, so that the light that would have been dispersed in all directions is effectively controlled within a narrow angle range (for example, 70% of the light is controlled within a specific angle), thereby significantly enhancing the axial brightness. The upper diffusion sheet is arranged on the prism sheet, which not only further atomizes the light emitted by the prism sheet to ensure uniform light transmission, but also plays an important role in protecting the prism sheet from external damage. Through the processing of the upper diffusion sheet, the display device 100 can provide a more uniform and soft surface light source, improving the overall visual effect.

[0082] As in the above embodiments, the frame 11 includes a first support part 115 and a second support part 117, the first support part 115 has a first supporting surface 1151; and the second support part 117 is connected to the first supporting surface 1151 of the first support part 115.

[0083] The first support portion 115 further has a first inclined surface 1153 facing the inner side of the frame 11, i.e., the accommodation space 111. The first inclined surface 1153 is connected with the first bearing surface 1151 and is inclined from the first bearing surface 1151 towards the inner side of the frame 11, i.e., the accommodation space 111. In some embodiments, the first inclined surface 1153 at least partially corresponds to the junction of the display area 200 and the non-display area 300.

[0084] The diaphragm assembly 2 is located in the inner side of the frame 11, i.e., the accommodation space 111, and overlaps the first bearing surface 1151, thereby ensuring the stability and position accuracy of the diaphragm assembly 2. The diaphragm assembly 2 and the first inclined surface 1153 have a gap therebetween, which allows light to penetrate therebetween, optimizes the light transmission path, effectively illuminates the non-display area 300 under the diaphragm assembly 2, significantly reduces the visual dimming phenomenon caused by light obstruction, and greatly improves the overall brightness of the display device 100.

[0085] Further, the light-incident space is increased by a depth of more than 0.5 mm on the outer side of the display area 200 under the diaphragm assembly 2, so that light can more smoothly penetrate to the lower side of the diaphragm assembly 2 and illuminate the diaphragm assembly 2, reducing the loss of light in the transmission process, thereby improving the overall brightness of the display device 100.

[0086] At the junction of the display area 200 and the non-display area 300, the gap between the first inclined surface 1153 and the diaphragm assembly 2 is set to be greater than 0.3 mm, so that light can more smoothly penetrate to the lower side of the diaphragm assembly 2, reducing the loss of light in the transmission process, thereby improving the overall brightness of the display device 100.

[0087] The first inclined surface 1153 can be a curved surface or a folded surface. When the first inclined surface 1153 is a curved surface, the first inclined surface 1153 is a circular arc surface. When the first inclined surface 1153 is a curved surface, the first inclined surface 1153 can be a smooth circular arc surface, which helps to uniformly distribute light, reduce glare and reflection, and further improve display effects.

[0088] In some cases, the fixed frame 1 further comprises a rib 119, which is arranged on and protrudes from the first supporting surface 1151. When the diaphragm assembly 2 is overlapped above the first supporting surface 1151 of the frame 11, the rib 119 abuts against the diaphragm assembly 2 to space the diaphragm assembly 2 from the first supporting surface 1151. The rib serves to lift the diaphragm assembly 2, thereby forming a gap of a certain height between the diaphragm assembly 2 and the first supporting surface. The presence of the gap facilitates the penetration of light, effectively expanding the range of the area that can be illuminated by the light, thereby enhancing the brightness performance of the display area 200 adjacent to the non-display area 300. This design aims to alleviate the visual dullness that may be caused by the obstruction of light transmission, thereby improving the overall display effect.

[0089] In the embodiments of the present application, the backlight module 10 can further comprise a back plate, a light source, a light guide plate, a diaphragm assembly 2, etc. The back plate is used to provide basic support and structural stability. The light source can be an LED (Light Emitting Diode) or a Mini LED, etc. The light source and the FPC (Flexible Printed Circuit) form a light bar. The LED light source can emit stable and high-brightness light. The light guide plate is used to convert the point light source or line light source emitted by the light source into a surface light source, so that the light is uniformly distributed. The light guide plate is generally made of high-transmittance material. The light guide plate has a dot design inside, which can scatter light to form a uniform surface light source.

[0090] Please refer to Figure 12 , Figure 12 The structure diagram of the display device provided by the embodiments of the present application is shown. The embodiments of the present application further provide a display device 100, which integrates the frame 11 design described in the above embodiments or the backlight module 10 in the above embodiments, and optimizes the functionality and structure on this basis to improve the overall performance and user experience of the display device 100.

[0091] The embodiments of the present application also provide a display device 100, which is an electronic device or component, and its core function is to convert electronic signals, digital signals or other forms of signals into visual information such as images, characters and numbers that can be recognized by human eyes. The display device 100 can be a television, a computer display, a mobile phone screen, a vehicle display screen, etc.

[0092] The display device 100 comprises the backlight module 10 and the liquid crystal module 20. The liquid crystal module 20 is lapped on the second supporting surface 1171 of the frame 11. The liquid crystal module 20 comprises a multi-layer structure including a liquid crystal layer, an electrode, a circuit board, etc. The liquid crystal module 20 displays images or information by controlling the arrangement of liquid crystal molecules. The layer closest to the backlight module 10 of the liquid crystal module 20 is a polarizer layer, which has a smaller area than other film layers, i.e., is recessed relative to other film layers. The recessed polarizer layer can effectively prevent light from leaking out of the edges of the liquid crystal module 20, thereby avoiding unnecessary light halo and glare outside the display area 200. This helps to improve the display effect and user experience of the liquid crystal display screen.

[0093] In the prior art display device 100 design, the liquid crystal module 20 is usually fixed on the fixed frame 1. However, there is a significant problem in this process: because the fixing area between the fixed frame 1 and the liquid crystal module 20 is relatively small, the bonding area is usually arranged outside the polarizing layer 171, i.e., the bonding material does not directly contact the polarizing layer 171. Although this method can achieve the fixation of the liquid crystal module 20 to some extent, it may also have some adverse effects, such as insufficient stability of the fixation, or due to the selection of the bonding position, unnecessary pressure or damage to the area around the polarizing layer 171.

[0094] In the present application, by increasing the area of the second supporting surface 1171, the contact area between the liquid crystal module 20 and the fixed frame 1 can be increased, thereby improving the stability of the connection and reducing the potential impact on the polarizer 21. When the second supporting surface 1171 covers a part of the polarizer 21, the polarizer 21 can be more effectively protected from damage. At the same time, since the bonding area is no longer completely located outside the polarizer 21, the risk of scratching or tearing the polarizer 21 due to the bonding operation can also be reduced.

[0095] The fixed frame 1 in the backlight module 10 is usually a frame-shaped structure for supporting and fixing other components, such as the film assembly 2 and the liquid crystal module 20. The fixed frame 1 forms an accommodating space 111 and is provided with a groove 113 on the inner surface of the frame 11. The film assembly 2 can be arranged in the groove 113, and the liquid crystal module 20 can be connected with the end surface of the frame 11. In other words, the liquid crystal module 20 and the film assembly 2 adopt a layered layout in this embodiment, and are not fixed in the same plane. Through the ingenious use of this layered design, sufficient fixing area is provided for the liquid crystal module 20 while ensuring that the expansion / contraction space of the film assembly 2 is not affected, thereby significantly improving the display quality and stability of the overall display device 100.

[0096] In order to enhance the connection stability and reliability between the liquid crystal module 20 and the frame 11, the display device 100 further comprises a first adhesive 30 arranged between the second supporting surface 1171 and the liquid crystal module 20, for fixing the liquid crystal module 20 on the frame 11. The liquid crystal module 20 is firmly fixed on the frame 11 by the adhesive force of the first adhesive 30. This fixing mode is not only simple and easy to implement, but also can effectively prevent the liquid crystal module 20 from loosening or falling off during long-term use.

[0097] The first adhesive 30 can be foam glue or AB glue. Both of these materials have good adhesive properties and adaptability, can meet the needs of different occasions, and can maintain the stable connection between the liquid crystal module 20 and the frame 11 for a long time. The foam glue has good adhesion and cushioning, which can effectively reduce loosening caused by vibration or impact. The foam glue also has a certain elasticity, which can adapt to the small size changes between the liquid crystal module 20 and the frame 11. The AB glue is a two-component epoxy resin adhesive, which needs to be mixed before use. It has high strength, high hardness and high temperature resistance, and is suitable for occasions that need to bear large stress and high temperature, and can maintain the stable connection between the liquid crystal module 20 and the frame 11 for a long time.

[0098] In the fixing frame 1, the backlight module 10 and the display device 100 provided by the embodiments of the present application, the frame 11 is composed of a first supporting part 115 and a second supporting part 117. The first supporting surface 1151 of the first supporting part 115 is used to support the diaphragm assembly 2, and the second supporting part 117 is used to support the liquid crystal module 20. In the present embodiment, the liquid crystal module 20 and the diaphragm assembly 2 adopt a layered layout, which can provide sufficient fixing area for the liquid crystal module 20 while ensuring that the expansion / contraction space of the diaphragm assembly 2 is not affected. There is a gap between the diaphragm assembly 2 and the first inclined surface 1153, which allows light to penetrate between the diaphragm assembly 2 and the first inclined surface 1153, optimizes the light transmission path, effectively illuminates the non-display area 300 part below the diaphragm assembly 2, significantly reduces the visual dim phenomenon caused by light obstruction, and greatly improves the overall brightness of the display device 100.

[0099] In the above embodiments, the description of each embodiment focuses on different aspects. The parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0100] In the description of the present application, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features.

[0101] The fixing frame, the backlight module and the display device provided by the embodiments of the present application are described in detail. The principles and implementation manners of the present application are described by applying specific examples, and the above description of the embodiments is only used to help understand the present application. Meanwhile, for those skilled in the art, the specific implementation manners and application ranges can be changed according to the idea of the present application, and the above description of the present application should not be understood as a limitation.

Claims

1. A fixture, characterized in that The fixed frame is applied to a backlight module having a display area and a non-display area surrounding the display area, and the fixed frame comprises: a frame comprising a first support part having a first supporting surface and a second support part connected to the first supporting surface of the first support part; the first support part further has a first inclined surface facing the inner side of the frame, the first inclined surface being connected to the first supporting surface and being inclined from the first supporting surface towards the inner side of the frame, and the first inclined surface is at least partially arranged at the non-display area and the junction of the non-display area.

2. The fixture of claim 1, wherein The first inclined surface is a curved surface or a folded surface.

3. The fixture of claim 2, wherein, When the first inclined surface is a curved surface, the first inclined surface is a circular arc surface.

4. The fixture of any one of claims 1 to 3, wherein, The fixed frame further comprises a rib position arranged on the first supporting surface and protruding from the first supporting surface.

5. The fixture of claim 4, wherein, The number of rib positions is at least two, and the rib positions are distributed at intervals.

6. The fixture of claim 4, wherein, In the direction in which the first support part points to the second support part, the cross-sectional area of the rib position gradually decreases.

7. The fixture of claim 4, wherein, The rib position comprises a point-like rib position or a long strip-like rib position.

8. The fixture of claim 7, wherein, When the rib position is a long strip, the extension direction of the rib position is perpendicular to the edge of the first supporting surface close to the inner side of the frame.

9. A backlight module, characterized in that, The backlight module has a display area and a non-display area surrounding the display area, and the backlight module comprises: a fixed frame according to any one of claims 1 to 8; a film assembly arranged on the inner side of the frame, the film assembly being overlapped on the first supporting surface, and the film assembly and the first inclined surface having a gap therebetween.

10. A display device, characterized by comprising: It comprises: a backlight module according to claim 9; a liquid crystal module arranged opposite to the backlight module and connected to the frame.

Images